Fluid lift



Oct. `26, 1943. v s C, BRADY -2,1.32,l'3()3 FLUID LIFT Filed Dec. l1, 1941 jiz- /f /7 Eg/' Patented Oct. 26, 1943 v i sairforadnraay,Barlgsyiiigijkl v'Ami-,ligationBecerraer 1-1, 194i;serialNwiagsif f bigims'gxcl. l j

rrmisuchiabarreifflrftoffprcvide therebetween an This invention relates`"t o anintermittent uid lift, andfitfi's 'an'object Aof the'in'vention4 to' provide a device of -thi'sfkind affording fan efficient andr economical way fllifting fluid under eitherl self eont'ain'edfholepressure o'rfrompr'es'sure 5,; otherwise created:L ,Y f wIt is l'also'l an'bbje'ct ofthe invent-,ionic provide alift` o'ffthiskind having means whereby' ispre-j ventedgduring the"operation o'f the lift, spraying or miXing' v 10l AV stllffnrthe'r object of theinvention isjto provide dev icaof this kind wherein means is provided to allow retrograde flowdnringinstallaz-"- tion AV0r in the 'event there is" too' high a column WhilePreSSurS'Offf '11j-'7 i 'The invention? also ha-sjfor'an object to prof' vi'de'ardevice of this kind constituting;aunitthat can be independently used o r canv bef coupled in series mellow fora-fmuitipleiifgofanuid. f1 c f'Ih hvefiivniconssts .in the-lidetails' lof :conf-.J 2'0A s'tru'ctioif andfin. the combination f h'dj arrangef ment of fthe several: parts of my improved 'flnid 1n accordance with an embodiment/f `'fnyinve j arrel :org desir'dfdimen- 4o sions having Vboth ends opena'ndwitl itsilvve; end. portion restricted;' as "at 2," The flipper' end portion -of'thefbarrel" I has threading thereinv unit4 head i This lhead H asi herein -dislosd,-"

portion providedwith an upstaridingannular wall 'n 4 of material thickness. 'I'his plate 3 is provided with a depending annular iiange 5, alsov fv'materialv .thicknesslf `This lflange 5" i's off a major diameter Jess thanrhat'of the-needn but is do" i s'f centricxto the axial center' of thehead rf .#Threading yupon and surrounding fthe iiar'i'ge` 15? is the fuppe'r vend. portionfofja"sleeve 6. sleeve '6: is fofi aslength to' i extend a major discomprises a. bottom plate 3f:havingits'periphraE l5- tance-.along andy within the `barrel:randje spaeedlj 5E* fluid inlet l multiple. :The pipe lines annular" 16v-pass@ 'I. Threading' Withinl th lower wnicnff'tnreads shortsieeve waneer w'aaljusifnemsnesiredl;

Thread the' plate' all eoupiinggcuar fn:A

nieuwe devices are used lin above s'ealv pernonfthre'ading haa (central opening '128 disposed upongthe idwer'fexrenaeq perder; off

ti'ft'fthe f threaded por# f ladapted itc "be f connected e with 'the.rstricbedFpdrtionz of a lThis cap 38 ser-ves to;

2' s of a seat plate 3l. The stem 21 freely passes through this member and threading on the tubular member 30 for coaction from below with the head 29 is a lock nut 32 whereby the seat plate 3l may be held in desired selected adjustment above the head 29.

Interposed between the head 29 and the piston 26 is an expansible member 33 of requisite tension and which operates to urge the upper end of the tubular valve stem 21 into engagement with theivalve-disk 34. 'Ihisfvialve disk'34 is carried by an elongated shank threading down through the bottom plate 3 of the head H L and having a lower tapered portion 36 extending within the upper end portion of the stern 21'.

The shank 35 above the plate 3 has threaded thereon a lock nut 31 for coaction from' above with the plate 3 for holdingthe lshank'fin desired endwise adjustment. Disposed over the upper end portion of the shank 35 1s ar sealing cap 3B, threading: within; a Pocket or: depressionv 3Q' provided in.- fhe upperzsurfaeof, theiplate 3.-.- preventrleakse around; ,the shank- 35-through the plate 3, j 4 .The bore of the head Hxabove the plate 3 is` in communication' with the pipe, linej t1 and this bore 40- is; in comm passer. passageway 1, through, a port 4I disposed throuh the plate s and throughL they flange; i depending therefrom. 4 n Y A When the device as herein disclosed is used asgasingleunit the comm tionbetween. the porti 24 and the by-pass or passageway 1 is closed by: e plus e used in series this plug 43 the sas! pressure may nassV buf-past.A or passageway headHofthelower.devlce.. I

The stem 21 is loff a klength-to extendvat all timesbelov thnhsedf, and threaded; 0r otherf i@ moved tof that dovmvthrovsgh V,the

Wise. secured t0 this .lower.; ex.tended portion off thetem 21 isa valve cap: 43 which-telescopically-` @Samsom the, uriner end port-ion otthe sleeve;- H),V This ,ca'pllrls provided in upper part 0f` sfide wall with: Pressuremlst-Port 44 mdf in its lower portion or valve seat 34 by the spring 33allowingfluidl to` enter throughthe-inlet-vniember l5 and out.

throughfthe port' int-ethesleevc 6.. "1 -he fluid will rise upwardlyV within-the sleeveV E through |010! the head andV theport Il intorno-bore inw the inner, nim'line' ik The fluid will also pass up `through. the tubular' member 30 into the cyllndeIIS-apd'underthe p iawn. 2i. ,At -this- 41 is entirely above: the; port 46.` when pressure is applied downthroueh the time the valve can passageway "and .through the. ports 13 and. 24 into the: cylinder 25.; abovethe piston 26. the

pistonzs will vbe moved downwardly allowing the pressuregto pass, down through the stem 21pastk the valve i0 and thruglithe port 44 into `*the lower portioniof ,thesleeve .6 :In this4 movement ther upper endv or the, stemf ,will be open allowunication Withthexloyr i .rlovswei` when the devices are.`l

v1 tothe 23` ofthe w with `a fluid-inlet port 'for' register with a port` 4t the upper.portionofY om, down .luto the valve. canof the greater pressure on 43 and out through the port 44 to force the fluid upwardly through the port 4l and up through the pipe line I1 for delivery through the fluid discharge 22 at the ground surface. This downward movement of the stem 21 will also cause the cap member 43 to close the port 46 so that fluid will be prevented from entering within the sleeve 6. When the fluid being lifted has reached the surface the pressure will be released from under thepiston so that the rgreater? Pressure on the top off the piston 2,3ywill push the stem 21 down into closing contact with the valve 50.

After the column of fluid has been lifted by the air or gas pressure and delivered out through `the fluid discharge 22 the pressure will be released from b elow the piston26 and as a result top of the piston 26 said piston will move further downward to bring vtact with the ball valve the lower end of the stem 21 into closing cona-nd to bring the port 45 of the cap valve into register with theport 46.

Inthe operation of the lift, the stem 21. will move or float between the valve disk 34 andthe valve 50 and the tapered portion 36 of the shankA 35` will` allow volume of gas or air to keep dersired pressure on flowing column.V If.pressure in column increasesit will move the stem 21 up on the Alarger part. of the tapered portion. 35 `to restrict flow, and if the pressure decreases the stem 21 willmove downwardly, allowing more gas or. air to enter. If the column pressure plus pressure of the spring 33 equals the pressureonthe piston 26, thelstem 2 1 will close against the valve diskl 34. Whenthis occurs` there is an equalizing i of pressure between the outer or" pressure string.

andthe inner or uid string :it` surface to balance thefluidhei'ghtby releasingl it back through the 'port 5,1. l

The port 5f`is disposed through the plate 8 and is normally closed by al downwardly opening valve 52.` Thisvalve '5.25 ismaintainednorihally closed byan'ei'r'pansiblefmember or coil spring 53 of.v1 a. tension to hold the fluid but .to allow the valve v 5.2 to. open when theris; too high .a columnwhile pressure is off or While making installation;

It is to `be stated that with. a 400 lb, pressure and with the member 33 being of `200 1b. tension, there will be lifted a column equal to 200 lbs. static pressure. i

-A line 54 leading from a suitable source of air or gas supply under pressure isin communication with the passageway 20 at the ground sur- Iface.

It is also believed to be apparent that when a single deviceisemployed the plug i12v is in place.-

" However, when the devices are `in multiple, the

plug k42 is removed and the' by-pass- 1 provides desired pressure communication with thedevices,- below. i It is also to be pointed out that the pressure inlet; port 44' is open at all times during the operation of the lift.

From the foregoing description itis thought to be obvious that a fluid lift 'constructedv in accord'-l ance with my invention is particularly well"v adapted for use by reason of the convenience'and facility with which it may be assembled and operated.

Y I claimz" f -1 1 An apparatus for lifting liquid comprising' ai head, ar pressure line coupled to the head, a liquid Y carry-off line coupled to the head, a sleeve de` pending :from the head, said head having a port affording communicationbetween said sleeve and the carry-ofi" line; the lower end of the sleeve Abeing opento allow fluid to enterrup into the sleev .1'

a. Asecond sleeve :within: the. rst sleevei andxde; pending fromfithefhead saidfhead having a? sec-rv ondnpo'rt` in communicationlwithithe secondil sleeve,'.a piston working; inv the second sleeve, ai;

tubular stem` 'for Athepiston` extending through the' piston and iopenat rboth ends, said .piston.'ex

tendingbelow the' second 'sleevealvalve' member depending` from 1 the head for .closing :the upper f, open end of Y .the tubular stem,` an "expansible, member` for?A constantly Y urging :the: piston and: stem'toward the'valve member,A aplate for closingV the lowerxfend: portion of'the first sleeve, a` third. sleeve extending :up throughv said plate, 'the uppe'r end of' said .third `sleeve being, closed Vand thelowerv .end openglthei sidewall of the third sleeve vadjacent ,thezclosed endithereof. being `proe; vided with :aI port, ra vcaplvalve carried byv the lower, endxportion of: the. tubular *stemxand telee scopicallyengagin'g overlthe upper portionof the third sleeve,'rsaid cap .valve beingzprovided; inA its? upper upart with :a pressure: inlet.;p.ort tand lin "its lower .portiongwithv ai :fluidV inlet 'port for i register with the port of the'thirdY sleeve upon` movement ofthe caplvalve downwardly over the third sleeve;V and .means for Lclosingzthe lower .l end fof the tui bular; stem when-,the pressure inlet rport of thecap; valve; and theinletport:oil thethird 'sleeve being open to allow fluid to enter up` into the sleeve, a second sleeve within the iirst sleeve and depending from the head, said head having a second port in communication with the second sleeve, a piston working in the second sleeve, a tubular stem `for the piston extending through the piston and open at both ends, said piston extending below the second sleeve, a valve member depending from the head for closing the upper open end of the tubular stem, an expansible member for constantly urging the piston and stem toward the valve member, a plate for clos-y ing the lower end portion of the `rst sleeve, a third sleeve extending up through said plate, the upper end of said third sleeve being closed and the lower end open, the side wall of the third sleeve adjacent the closed end thereof being prof vided with a port, a cap valve carried by the lower end portion of the tubular stem and telescopically engaging overv the upper portion of the third sleeve, said cap valve being provided in its upper part with a pressure inlet port and in its lower portion with a fluid inlet port/for register with the port of the third sleeve upon movement of the cap valve downwardly over the third sleeve, means for closing thelower end of the tubular stem when the pressure inlet port of the cap valve and the inlet port of the third sleeve are in register, the plate-closing the lower portion of the first sleeve being provided with a port therethrough, and a normally .closed downwardly opening valve for said port of the plate.

a` second yport in' communicationfwithzthe l secondi sleeve, apiston working in theV second sleevegfiag tubularstem; for the' pistonzextending througha the pistonand open atfbothends; said pistonex:`

. tending below:zthersecond'sleeve; a valvermembem .depending :fromf the headffor :closingvthe upper;

open Vendiof theftubular. stem;` an expansiblef member.vv for constantly-flurging the pistonandfgI stem. toward the .valvexfmemben aplate for, close; ing the lower end portion oftherst .sleelleza' third sleeve extending-wup, throughf` said: plateg':

the upper end `of said: third' sleevebeing closed-g and the lower endopen, the side :walljofiithe third-.i

sleeve adj acentth'e 'closed' end ithereof beingtprO-j' f vided with aV port, vapap `valve' carriedv by, the;

lowerend. portion ofv ,the tubular 'fstemgand ,f--tele scopically engaging overgthe -upper'portiongofi-thj third sleeve, 'saidcap' valve beingprovided in lts;L

upper part with f la pressure inlet port andin its l lower portion with a fluid `inletgport ior,yregisterI withthe'port of' the third, sleeve upon movem of the capv `valvedownwardly vovergthe-tfir sleeve, means for closingfthe lower ,endpfatheg tubularn stem when vthe pressure inlet port oilthef cap valve and the-inlet por-t ofgthe third-sleeveir are in'register, the valve member depending from*k the head including ashanlf: having downwardly; disposed `tapered portion iextendingl within the upper' portion of the tubulargstemi y,

f4. Anfapparatusior lifting liquid ,comprisigng-g ahead, a pressure linecoupled tothe head, a,

f liquid carry-off linejcoupled tothe head,asleeve:A

depending from ltheqhead, said head haying.a port aiording communication between vsaid sleeve and the carry-off line, the lower end of the sleeve being open to allowv fluid to enter up into the sleeve, a second sleeve within the iirst sleeve and depending from the head, said head having a second port in communication with the second sleeve, a piston 'working in the second sleeve, av tubular stem for the piston extending through the piston and open at both ends, said piston extending below the second sleeve, a valve member depending fromthe head for closing the upper open end of the tubularstem, an expansible member for'constantly urging the piston and stem toward the valve member, a plate for closing the lower end portion of the first sleeve, a thirdsleeve extending up through said plate, the upper end of said third sleeve being closed and the lower end open, the side wall of the third sleeve adjacent the closed end thereof being provided with a port, a cap valve carried by the lower end portion of the tubular stem and telescopically engaging over the upper portion of the third sleeve, said cap valve being provided in its upper part with a pressure inlet port and inits lower portion with a uid inlet port for register with the port of the third sleeve 3. An apparatus for lifting liquid comprising 'l a head, a pressure line coupled to the head, a liquid carry-off line coupled to the head. a sleeve depending from the head, said head having a port affording communication between said sleeve and the carry-01T line, the lower end of the sleeve being open to allow fluid to enter up into the sleeve, a second sleeve within the rst sleeve and depending from the head, said head having upon movement of the cap valve downwardly over the third sleeve, and means for closing the lower end of the tubular stem when the'pressure inlet port of the -cap valve and the inlet portl of the third sleeve are in register, said valve having a.' second port in communication with the second sleeve, ai piston working in the second sleeve; n tubular stem for the piston .extending through the piston and .open at both ends. said pistonextemitng below the second sleeve, a valve member depending lrom the head` for closing the open end of the tubular. stem, an ex punible member for constantly Aurging the being provided with a port,Y a cap valve carried by the lower end portion of the tubular stem and telescor'cally engaging over the upper portion oi the third sleeve, said cap valve being provided in its upper part with-a pressure inlet port and in? its lower portion with a uid inlet port for register with the port ofthe third sleeve upon movement of the capvalve downwardly over the third sleeve, the upperclosed end of the .third sieeve being provided with a pocket, and a Valve member free within -said pocket for closing the lower end of the tubular 4stern upon movement of the same toward the third sleeve. Y

6. An'apparatus for lifting liquid' comprising a head, a pressure line coupled to the head,V a liquid carry-oil' line coupled to the head, a sleeve depending from the head, said head having a port affording communication between said sleeve and the carry-oil!v line,`the lower Yend of thesleeve being open tol allow uid to enter up into the sleeve, a second sleeve within the first sleeve and depending from the head, said head having a second port in communication with the second sleeve, a piston working in the second sleeve,`a tubular stem for the piston extending through the piston and open at both ends, said piston extending below the second sleeve, a. valve member depending from the head for closing the upper open end of the' tubular stem, an expansible'member for constantly urging the piston and stem toward the valve member, a plate for -closing the lower end portion oi the rst sleeve, o. third sleeve extending up through said plate,

' the upper end of said third sleeve being closed and the lower endv open, the side wall of the third sleeve adjacent' the closed end thereof being provided with a port, a cap valve carried by the lower end portion of the tubular stem and telescopically engaging' over the upper portion of the third sleeve, said cap valve being provided in its upper part with aA pressure inlet port and in its-lower portion with a iiuid inlet port for register with the port of the third sleeve upon movement of the cap. valve downwardly over the third sleeve, lthe upper closed end of the third valve being provided with a pocket, a valve member free within saidpocket for closing the lower end of the tubular stem upon movement of the same toward the third sleeve, and a cushion within the pocket upon which the ball valve rests.

SANFORD C. BRADY. 

